Quick-weighing attachment for scales



M.MAURER QUICK wETCHmC ATTACHMENT FoR SCALES.

APPLICATION FILED JULY 9'1919. v 1 ,429,362.- BaltptedSept. 19, 1922.

2 SHEETSTSHETET l.

M. MAURER M. MAURR.

ouml( WEIGHING ATTACHMENT FOR SCALES.

APPLICATION FILED JULY 9,191.9.

1,429,362. PateIlSepti 19, 19212.

2 SHEETS-SHEET 2X Y INVENToR. M. MAURER.

B w k TToRNEY.

Patented Sept. 19, 1922.

UNITED STATES Parana" centen.

MARTIN MAURER, OF PU'EEL, COLORADO.

QICK-WEIGHXNG ATTACHMEIBTT THOR SALES.

Anplicaton led. July 9, 1919. Serial No. SSZS,

To all 'whom zi/may concern: f

Be it Yknown that I, MARTIN Mannen, a citizen of the United States,residing at Pueblo, in the county of Pueblo and State of Colorado, haveinvented certain new and useful `Improvements in Quick-lleighingAttachments for Scales, of which the follow-y ing is a specification.

This invention relates to attachments for scales, and moreparticularlyto improvements in the weighing attachment shown and described in myLetters- Patent No. 729,376, issued on May 261903g The attachment abovereferred to consists of a double-pointed pivoted bar cooperating withtwo graduated scales and attached to the long arm of a scale beamthrough the medium of alink.

A coiled spring yieldingly opposes the pivotal movement of the pointerbar in conjunction with the scale beam bythe weight of the load, and byits balancing effect, provides fa ready means for indicating the weightby the position of the pointers on the scales. i

A pair of dash-pots connected with `the pivoted pointer-bar cooperatewith the spring in balancing the lock on the scale. beam and also tendtofsteady the movement of the bar.

The action of the spring in the above-described mechanism was found tobe susceptivble to vibration, and it is the primary object of thepresent invention to provide a device which performs the function of thespring ina more `positive manner, kwhich is nonelastic and thus -notdetrimentally affected lby vibration, and which is readily-adjustable tomaintain the accuracy required in weighing apparatus of the type towhich it is applied.

W'ith these objects in view, my invention consists in attaching to thepointer-bar of the weighing attachment, a counter-balancing weight inthe form of a pendulum which when thebar isin its idle or zero position,is suspended in the perpendicular.

The bar is connected with the scale-beam through the medium of aflexible strap which passes partially around the periphery of a circularbearingmember on the bar and which effectsan upward motion of thependulum when the beam is moved about its fulcrum by the weight of aload placed on the scale.

quick-weighin g p The pendulum consists of a body whichis mounted on athreaded rod ,projecting laterally from the pointer bar and which isreadily adjusted to vary its distance from the pivotal axis of the bar.y

An embo= nient of n y invention has been illustrated lin theaccompanying drawings in which-- ,i

Figurejl represents a side elevation of a beam scale te whichmyhimproved quickio'hing attachment is applied;

figure 2, a. tion of the 'central portion of the pivoted pointer bar, atwhich the pendulum and its lifting medium are dispo-sed.;

Figure 3, plan view of the parts shown in Figure 2; and y i Figure 4, asection taken on the line eine, Figure 2.

Referring to the drawings by numerical reference characters, 2designates the scale beam fulcrumed as at 3` and carrying upon itsgraduated long arm l the usual sliding poise 5.

rlhe quick-weighing attachment consists of the pointer bar 6 `which ispivotally sup- `ported at its center'vupon ,a standard 7.

"ated in reverse directions to simultaneously `indicate the weightofaload on the scale bythe -inovement of the bar.

fragmentary, enlarged eleva- This Adouble weighing is of advantage iwhere twoy persons at separated points desire to checlt each othersobservations, as for ez;- ample, when weighingcoal at mines in which thevminers are paid by the tonnage they individually produce and the coalis weighed at `the time itis removed kfrom. the excavation.

ltwi'lhbe understood, however, that the attachment is equally effectiveif but one pointer is used in cooperation with a single graduated scale.i

Thepivoted pointer bar is connected with i the scale-beam through theintermediary of a wheelv Qplaced concentric to its axis of rotation. f i

Thewheel is preferably formed integral witha central portion of the barmade in the forni of an elongate block l() which at its opposite endshas longitudinal openings to receive the ends of pointer rods 12 securedby set-screws 13.

IThe wheel is secured upon a knife-edged pivoted shaft 14; which restsupon bearings on the standard at opposite sides of the wheel.

A flexible band 15 fastened to the wheel as at 1Gj passes partiallyaround the periphery thereof and connected with the long arm of thescale-beam through the medium of a turn-baclde 17 which is suspendedfrom a knife-edged stud t8 projecting)` laterally from the beam.

The pendulum consists of a threaded rod 19 secured to the bloel: 'l0 andextending obliquely with respect to the longitudinal axis of the pointerbar.

The body 2O of the pendulum has a bore through 'which the rod passes andsecurely held in its adjusted positions between nuts 2l screwed ou therod at opposite sides thereof.

The reference charac-ters Q2 designate the dashqjiots composed ofcylinders which are partially filled with oil or other suitable liquid,and pistons 223 atthe ends of rods 24; which are pivotally connectedwith the pointer bar at opposite sides of its pivotal axis.

ln 'the operation of my invention the pendulum is lifted by the Weightof a load on the scale-beam and cooperates with the dashpots to indicatethe Weight upon the scales. It will be understood that the attacl'imentacts as an auxiliary to the sliding poise. which is moved along` thebeam to counterbalance the greater part of the weight of the load beforethe weighing attachn'ient is put into effect.

The graduations on the scales are spaced at progressively varyingdistances to compensate for the gradually increasingv gravitative forceof the iveigght duringits upward movement with the scale beam.

he variations in the distances between the graduation are, however, toosligl'it to be perceptible except by minute observation and have notbeen shown in the drawings.

lt will be seen from the above explanation that the improved element ofthe quickweighing` attachment not only renders its operation morepositive and accurate7 but also is advantageous over the originalconstruction shown in the before-mentioned patent,

by its extreme simplicity of construction, it being understood that butone pivot is required to n'iaintain the entire attachment in itsoperative position with relation to the scale beam.

lt will also be seen that the absence of any elastic part in theconstruction of the attach ment facilitates its operation by permittingof the indicatoiy member assuming` a condition of rest Without prolongedvibration.

Having thus described my invention what l claim and desire to secure byLetters-Patent is:

l. In a beam scale of the character described the combination of afulcrumed scalebeamT a pivoted pointer parallel therewith, a relativelystationary scale cooperating with vthe pointer, a coaxial segmentn'ioving,- with the pointer a strap connectingthe segment with the beamat point outside the fulcruin thereof7 and a Weight acting upon thepointer and relatively disposed to be lifted by nioveinent of thescale-beam under the influence of the load.

Q. ln a beam scale of the character described the combination of afulcrumed scalebeam.y a pivoted pointer beneath the beam in parallelrelation thereto, a relatively stationary scale cooperating' with thepointer, a coaxial segment moving with, the pointer, a strap connectingYthe segment With the beam at a point outside the fulcrum thereof, and aWeight acting upon the pointer and relatively'disposed to be lifted bymovement of the scale-beam under the influence of the load.

2:3. ln a beam scale of the character described thecinnbination of afulcrumed scalebeam, a pivoted. pointer parallel therewith, a relativelystationary scale cooperatingl with the pointer, a coaxial segment movingwith the pointer, strap connecting;- the segment With the beam at apoint outside the fulcrum thereof a dash pot operatively connected withthe pointer7 and a Weight acting upon the pointer and relativelydisposed to be lifted by movement of the scale-beam under the influenceof the load.

In testimony whereof I have aliixed my signature.

MARTIN MAURER.

